気仙沼湾および周辺地域における表層堆積物中の珪藻遺骸群集 Distributions of modern diatom assemblages from surface deposits in Kesennuma Bay and surroundings, northeast Japan

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著者

    • 塩見 良三 Shiomi Ryozo
    • 大阪市立大学大学院理学研究科地球学専攻 Department of Geosciences, Graduate School of Science, Osaka City University
    • 石川 智 Ishikawa Satoshi
    • 九州大学大学院理学研究院地球惑星科学部門 Department of Earth and Planetery Sciences, Faculty of Sciences, Kyushu University
    • 鹿島 薫 Kashima Kaoru
    • 九州大学大学院理学研究院地球惑星科学部門 Department of Earth and Planetery Sciences, Faculty of Sciences, Kyushu University

抄録

The surface deposits at 27 sites in Kesennuma Bay, North Japan, and at 6 sites in the surrounding rivers were taken on July and September in 2010, and February in 2011. The distributions of diatom assemblages from those sediments presumed the ecological environment and sedimentary processes at the study area. There was a distinct difference in the distributions of marine plankton species, such as Thalassiosira spp. and marine benthic-epiphytic species, such as Cocconeis scutellum. The marine plankton species Thalassiosira spp. dominated at eastern mouth of the bay, while the marine benthic-epiphytic species such as Cocconeis scutellum dominated at western mouth of the bay where shallow tidal flat with abundant sea algae spread widely. The freshwater diatom valves flew into the bay by river flooding and mainly deposited at the river mouths. The distribution of diatom assemblages from the surface sediments was very important data to presume the erosion, transportation and sedimentary processes by the huge tsunami on March 11, 2011.

収録刊行物

  • 化石

    化石 93(0), 7-23, 2013

    日本古生物学会

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各種コード

  • NII論文ID(NAID)
    110009603700
  • NII書誌ID(NCID)
    AN00041606
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00229202
  • NDL 記事登録ID
    024626328
  • NDL 請求記号
    Z18-838
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
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